Billable / Specific Code
ICD-10-CM C77.3 is the diagnosis code for Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes. This code falls under the section "Malignant neoplasms of ill-defined, other secondary and unspecified sites" within Chapter 2 — Neoplasms (C00-D49). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where C77.3 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, C77.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
C77.3 is the ICD-10-CM diagnosis code for "Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of C77.3 is C77 ("Secondary and unspecified malignant neoplasm of lymph nodes"). C77.3 provides a more specific classification within this category.
C77.3 is located in Section C76-C80 — "Malignant neoplasms of ill-defined, other secondary and unspecified sites" within Chapter 2 of the ICD-10-CM Tabular List.
Use C77.3 when the patients documented diagnosis matches "Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes is C77.3.
Yes, C77.3 can be used as a primary diagnosis code since it is billable and specific.
C77.3 is in Chapter 2 of the ICD-10-CM Tabular List.
Yes, C77.3 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.